Magnetics in Power Electronics

Understand the principles of electromagnetism and magnetic materials.

Basic concepts of magnetic fields, flux, and inductance. Magnetic properties of materials: permeability, hysteresis, saturation, and losses. Selection criteria for magnetic materials based on application requirements.

Learn the design and application of inductors in power electronic circuits.

Types of inductors: air core, iron core, ferrite core. Inductor design parameters: inductance, current rating, core geometry. Applications of inductors in filtering, energy storage, and coupling.

Understand the design and application of transformers in power electronic systems.

Transformer construction and design: core types, windings, insulation. Turn ratio calculations and voltage regulation. Applications in isolation, voltage step-up/step-down, and impedance matching.

Explore core materials and their impact on magnetic component performance.

Comparison of core materials: ferrite, powdered iron, amorphous, nanocrystalline. Influence of core material on inductance, losses, and thermal performance. Core selection for high-frequency applications.

Analyse loss mechanisms in magnetic components and methods for loss reduction.

Core losses: hysteresis and eddy current losses. Copper losses and their dependence on frequency and current. Techniques for minimizing losses: core material selection, winding strategies, cooling methods.

Implement magnetic component testing and quality assurance procedures.

Testing procedures for inductance, resistance, and Q factor. Thermal testing and evaluation of component stability under load. Quality assurance protocols: inspection, fault detection, and reliability testing.